Diborane
Synonyms: Boroethane; Diboron hexahydride
OSHA IMIS Code Number: 0862
Chemical Abstracts Service (CAS) Registry Number: 19287-45-7
NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: HQ9275000
Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1911 18
Chemical Description and Physical Properties:
colorless gas with a repulsive, sweet odor
molecular weight: 28
vapor pressure: >1 atm
boiling point: -134°F
melting point: -265°F
Incompatibilities: Air, halogenated compounds, aluminum, lithium, active metals, oxidized surfaces
OSHA Permissible Exposure Limit (PEL):
General Industry: 0.1 ppm, 0.1 mg/m3
Construction Industry: 0.1 ppm, 0.1 mg/m3 TWA
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.11 mg/m3 TWA
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm TWA
Potential Symptoms: Tight chest, precordial pain, shortness of breath, nonproductive cough; nausea; headaches; lightheadedness, vertigo; chills, fever; fatigue, weakness; tremors, muscle fasciculation. In animals: liver, kidney damage; pulmonary edema; hemorrhage
Health Effects: Acute respiratory damage (HE11); Nervous system damage (HE7) Irritation-Eye---Marked (HE14)
Affected Organs: Respiratory system, CNS
Additional Information:
- Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.
Primary Laboratory Sampling/Analytical Method (SLC1):
-
sampling media: Fluoropore Filter in series with Charcoal tube [Type 580-20 (Barnebey-Cheney) impregnated charcoal, (100/50 mg sections)]
maximum volume: 260 Liters
minimum volume: 120 Liters
maximum flow rate: 1.0 L/min
current analytical method: Inductively Coupled Plasma; ICP/DCP-AES
method reference: 1 (NIOSH 6006 [21 KB PDF, 4 pages])
method classification: Not Validated
Secondary Laboratory Sampling/Analytical Method (SAM2):
-
device: Detector Tube
company: Draeger
part #: 67 18101
range: 0.05-3 ppm
class: Mfg
-
device: Detector Tube
company: MSA
part #: Reagent 82099, Filter 82388
range: 0.1-3.0 ppm
class: Mfg
-
device: Instrumentation
company: Infrared Spectrophotometer
part #: MIRAN 1A & 1B
range: 0.6 ppm @ 3.8 um
class: Mfg
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